George hayes



(No Model.)

, G. HAYES.

METALLIC LATHING..

No. 536,624. Patented Apr. 2, 1895.

@ii LK,

UNITED STATES PATENT Ottica.

GEORGE HAYES, OF NEW YORK, Y.

M ETALLIC LATHING.'

SPECIFICATION forming part of Letters IPatent No. 536,624, dated AApril2, 1895. Application tiled September 10, 1894l Serial No. 522,568. (Nomodel.)

To a/ZZ whom t may concern;

Be it known that I, GEORGE HAYES, a citizen of the United States, and aresident of the city, county, and State of New York, have invented a newand useful Improvement in Metallic Lathing, of whichA the`following is aspeciiication.

My invention consists of a lathing of sheetmetal having slitted ribsprojected from the plane of the sheet at intervals apart, and whollyallowed for by the lateral expansion of the slits rtherein,- the sheetbetween the said ribs being flat and the finished lathing sheet ofsubstantially the same area as that of the original iiat sheet blankfrom which it was made, the flat space between every two ribs providedwith tongued, or lipped, apert-ures at intervals-and all arranged andadapted for holding plaster.

In the drawings, Figure 1,.represents a sheet ot lathing showing stagesof manufacture, at the upper-end all flat, the slits shown as when firstmade. Lower down the sheet shows the ribs formed therein with dat spacesbetween them, in the Iiat spaces tongued apertures in one line. In theribs the slits are shown expanded to apertures allowing for theprojection of the ribs. Fig. 2, is a cross section of the lathing sheeton line .fr-y of Fig. 1. Fig. 3, is a face view of a lathing sheetsimilar to Fig. l, except that by a shifting of dies in cutting slitsfor ribs the location of the slits is changed and all those in each ribbreak joint, whereas those of the two interior lines in Fig. l arelocated so as to pair and form a loop between them. Fig. 4, is a crosssection of a lathing sheet wherein the flat spaces between the ribs arewider than those of Figs. l, 2, and 3, and with several lines of tonguedapertures in the flat.

On the drawings A, indicates thelathing sheet.

A', indicates ribs formed in the sheet at any desired and suitabledistance apart. Between every two such ribs the sheet remains at.

B, indicates slits or analogous openings cut through the sheet beforeridging on such lines, and of such length and distances apart as willfacilitate the projection of the desired parts of the sheet designed toconstitute ribs. B', indicates the same slits expanded into widerapertures in the process of ridging, or projecting the ribs. The ribsare derived from expansion of the slits as the desired parts of thesheet are pressed out of plane by ridging rolls or pressure dies-whilethe parts of the sheet between remain flat and without lateral movementand the ribs are wholly allowed for by the expansion of the slits andthe area of the ribbed sheet is substantially the same as that of theIiat sheet blank from which it was made.

In Fig. l the inner two lines of slits are shown as located one eachside the apex of the ridge and every two such slits as a pair with abridge or loop of metal between, the loop having upturned edges andconcave upper face-fthe outer line of slits each side of each rib, beinglocated at the base of the rib and breaking joint with the lines above,leach rib being thus formed with four lines of slits. In Fig. 3, thearrangementis somewhat similar except that none of the slits to each ribare arranged in pairs but all break joint throughout. The upper edge toeach slit in the line near the apex line of rib is formed with an upwardturn.

In the flat surface between each two ribs I form apertures in one ormore rows or lines according to the desired width of such space afterthe manner shown at C, on the drawings-preferably 'of the styleshown-with tongues, or lips-turned outwardly-but I do not limit myselfto that particular form of aperture or arrangement of tongues-but bymeans of such tongued apertures in conjunction with the apertures in thesides of the ribs plaster is most ettectually secured to the lathingsheet-while the ribs render the sheet sufficiently rigid and strong.

What I claim as new, and desire to secure by Letters Patent, is l 1. Asheet of metal lathing having a surface of.alternatiiig ribs and tlatspaces-the rib portions slitted through at intervals lougitudinally, infour rows each, projected from the plane of the sheet and wholly allowedfor by lateral expansion of the slits therein as set forth.

2. A sheet of metal lathing having a surface of slitted ribs andalternating iiat spaces the slits in each rib arranged infour rows,those of the two interior rows located each side the ridge and havingreach one nptnrned edge--thevexterior slits located `at the base, in therib, and breaking joint with those of the interior rows, the ribsprojected from the plane of the sheet and allowed for by lateralexpansion of the slits therein as set forth.

3. A sheet of metal lathing having a surface of alternating ribs andflat spaces, the ribs slitted longitudinally in four rows, each, theslits ot the interior two rows pairing and with one upturned edge each,with a concave facebetween each pair, the slits of the outermost rowsbreaking joint with those of the GEO. HAYES.

Witnesses:

R. H. REILL, ARTHUR HAYES.

